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v6.19-rc2
50303 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
610192c229 |
Fix IRQ thread affinity flags setup regression.
Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmlHrpkRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1hBGBAAuZG/SpA5k4Aexg3rfisxfenj4s4qeTO3 HqMXKU5M1zEWOlG2RUx/+Gn0RCb2U/eHzwAXtu85TJjYPQ3tCN+G49/VbbKZm3/J wM1gvGvpdX9miSi5S2e6Ete0zf0bYXCP4dJOreekyzzngXd9lqncBA/u+vimt00l 1axg7osB73puSKjeg/g8t3CIjRvQ6XgD9HC5dAlUebmFQz6KSgM6yZXac/SXbYqn nyGN9EIq7HegrBAOLW16viUK5dq5WmmUS02MA728soLEwwxn/yDr44MjPaqPAJlQ 2cwDHiKvZRtzI9wDlPaVH/Dg2OoXvrEEjrjfrzTWpjHn6p8jjluuUYBqtTIJF+g7 rUnbtVz4GwOMg7SetMHW9YOMo3R0LXC5ly6RFycRdYqgdnEwTML5Jh4qjxWBiqJD 98DtPGxUEdGKAUkOE4wLSEJy9EgjSXMm0nc8V6MJMl6afEoKBSU/w73nxc+VVHvw x7B/G/qXhJdSqO1aEftHbeZUlpOc2NSMzMXEXqCfE7B/S3vfCbC0PSLQnEq90AjY yTT7gI9pI37ULMqqf1b0pfosQuBu0cdkT5r++RFuaZLRl/kBefIyRiWcgwNDAs5C /YNeSH+qU043/f55vOoHna8B+W+VSkTGZCQpWcYcRhYCxVIWupdY1WBH9AqBg1R4 Ar81aRZK2hI= =HT4H -----END PGP SIGNATURE----- Merge tag 'irq-urgent-2025-12-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq fix from Ingo Molnar: "Fix IRQ thread affinity flags setup regression" * tag 'irq-urgent-2025-12-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: genirq: Don't overwrite interrupt thread flags on setup |
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|
Linus Torvalds
|
dd9b004b7f |
tracing fixes for v6.19:
- Add Documentation/core-api/tracepoint.rst to TRACING in MAINTAINERS file Updates to the tracepoint.rst document should be reviewed by the tracing maintainers. - Fix warning triggered by perf attaching to synthetic events The synthetic events do not add a function to be registered when perf attaches to them. This causes a warning when perf registers a synthetic event and passes a NULL pointer to the tracepoint register function. Ideally synthetic events should be updated to work with perf, but as that's a feature and not a bug fix, simply now return -ENODEV when perf tries to register an event that has a NULL pointer for its function. This no longer causes a kernel warning and simply causes the perf code to fail with an error message. - Fix 32bit overflow in option flag test The option's flags changed from 32 bits in size to 64 bits in size. Fix one of the places that shift 1 by the option bit number to to be 1ULL. - Fix the output of printing the direct jmp functions The enabled_functions that shows how functions are being attached by ftrace wasn't updated to accommodate the new direct jmp trampolines that set the LSB of the pointer, and outputs garbage. Update the output to handle the direct jmp trampolines. -----BEGIN PGP SIGNATURE----- iIoEABYKADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCaURuVxQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qhU1AQCe3AwEiPg4PAooR7D3TDgj4ypJXUwS J7PM0cvniKhJ2AD/VpSQCyj7sB8UQdVE04SK3hxduVwHIzrBhDe2voC8eQQ= =C9zF -----END PGP SIGNATURE----- Merge tag 'trace-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull tracing fixes from Steven Rostedt: - Add Documentation/core-api/tracepoint.rst to TRACING in MAINTAINERS file Updates to the tracepoint.rst document should be reviewed by the tracing maintainers. - Fix warning triggered by perf attaching to synthetic events The synthetic events do not add a function to be registered when perf attaches to them. This causes a warning when perf registers a synthetic event and passes a NULL pointer to the tracepoint register function. Ideally synthetic events should be updated to work with perf, but as that's a feature and not a bug fix, simply now return -ENODEV when perf tries to register an event that has a NULL pointer for its function. This no longer causes a kernel warning and simply causes the perf code to fail with an error message. - Fix 32bit overflow in option flag test The option's flags changed from 32 bits in size to 64 bits in size. Fix one of the places that shift 1 by the option bit number to to be 1ULL. - Fix the output of printing the direct jmp functions The enabled_functions that shows how functions are being attached by ftrace wasn't updated to accommodate the new direct jmp trampolines that set the LSB of the pointer, and outputs garbage. Update the output to handle the direct jmp trampolines. * tag 'trace-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: ftrace: Fix address for jmp mode in t_show() tracing: Fix UBSAN warning in __remove_instance() tracing: Do not register unsupported perf events MAINTAINERS: add tracepoint core-api doc files to TRACING |
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|
Linus Torvalds
|
7b8e9264f5 |
Including fixes from netfilter and CAN.
Current release - regressions:
- netfilter: nf_conncount: fix leaked ct in error paths
- sched: act_mirred: fix loop detection
- sctp: fix potential deadlock in sctp_clone_sock()
- can: fix build dependency
- eth: mlx5e: do not update BQL of old txqs during channel reconfiguration
Previous releases - regressions:
- sched: ets: always remove class from active list before deleting it
- inet: frags: flush pending skbs in fqdir_pre_exit()
- netfilter: nf_nat: remove bogus direction check
- mptcp:
- schedule rtx timer only after pushing data
- avoid deadlock on fallback while reinjecting
- can: gs_usb: fix error handling
- eth: mlx5e:
- avoid unregistering PSP twice
- fix double unregister of HCA_PORTS component
- eth: bnxt_en: fix XDP_TX path
- eth: mlxsw: fix use-after-free when updating multicast route stats
Previous releases - always broken:
- ethtool: avoid overflowing userspace buffer on stats query
- openvswitch: fix middle attribute validation in push_nsh() action
- eth: mlx5: fw_tracer, validate format string parameters
- eth: mlxsw: spectrum_router: fix neighbour use-after-free
- eth: ipvlan: ignore PACKET_LOOPBACK in handle_mode_l2()
Misc:
- Jozsef Kadlecsik retires from maintaining netfilter
- tools: ynl: fix build on systems with old kernel headers
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from netfilter and CAN.
Current release - regressions:
- netfilter: nf_conncount: fix leaked ct in error paths
- sched: act_mirred: fix loop detection
- sctp: fix potential deadlock in sctp_clone_sock()
- can: fix build dependency
- eth: mlx5e: do not update BQL of old txqs during channel
reconfiguration
Previous releases - regressions:
- sched: ets: always remove class from active list before deleting it
- inet: frags: flush pending skbs in fqdir_pre_exit()
- netfilter: nf_nat: remove bogus direction check
- mptcp:
- schedule rtx timer only after pushing data
- avoid deadlock on fallback while reinjecting
- can: gs_usb: fix error handling
- eth:
- mlx5e:
- avoid unregistering PSP twice
- fix double unregister of HCA_PORTS component
- bnxt_en: fix XDP_TX path
- mlxsw: fix use-after-free when updating multicast route stats
Previous releases - always broken:
- ethtool: avoid overflowing userspace buffer on stats query
- openvswitch: fix middle attribute validation in push_nsh() action
- eth:
- mlx5: fw_tracer, validate format string parameters
- mlxsw: spectrum_router: fix neighbour use-after-free
- ipvlan: ignore PACKET_LOOPBACK in handle_mode_l2()
Misc:
- Jozsef Kadlecsik retires from maintaining netfilter
- tools: ynl: fix build on systems with old kernel headers"
* tag 'net-6.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (83 commits)
net: hns3: add VLAN id validation before using
net: hns3: using the num_tqps to check whether tqp_index is out of range when vf get ring info from mbx
net: hns3: using the num_tqps in the vf driver to apply for resources
net: enetc: do not transmit redirected XDP frames when the link is down
selftests/tc-testing: Test case exercising potential mirred redirect deadlock
net/sched: act_mirred: fix loop detection
sctp: Clear inet_opt in sctp_v6_copy_ip_options().
sctp: Fetch inet6_sk() after setting ->pinet6 in sctp_clone_sock().
net/handshake: duplicate handshake cancellations leak socket
net/mlx5e: Don't include PSP in the hard MTU calculations
net/mlx5e: Do not update BQL of old txqs during channel reconfiguration
net/mlx5e: Trigger neighbor resolution for unresolved destinations
net/mlx5e: Use ip6_dst_lookup instead of ipv6_dst_lookup_flow for MAC init
net/mlx5: Serialize firmware reset with devlink
net/mlx5: fw_tracer, Handle escaped percent properly
net/mlx5: fw_tracer, Validate format string parameters
net/mlx5: Drain firmware reset in shutdown callback
net/mlx5: fw reset, clear reset requested on drain_fw_reset
net: dsa: mxl-gsw1xx: manually clear RANEG bit
net: dsa: mxl-gsw1xx: fix .shutdown driver operation
...
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Menglong Dong
|
39263f986d |
ftrace: Fix address for jmp mode in t_show()
The address from ftrace_find_rec_direct() is printed directly in t_show().
This can mislead symbol offsets if it has the "jmp" bit in the last bit.
Fix this by printing the address that returned by ftrace_jmp_get().
Link: https://patch.msgid.link/20251217030053.80343-1-dongml2@chinatelecom.cn
Fixes:
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Darrick J. Wong
|
74bf97e9a8 |
tracing: Fix UBSAN warning in __remove_instance()
xfs/558 triggers the following UBSAN warning:
------------[ cut here ]------------
UBSAN: shift-out-of-bounds in kernel/trace/trace.c:10510:10
shift exponent 32 is too large for 32-bit type 'int'
CPU: 1 UID: 0 PID: 888674 Comm: rmdir Not tainted 6.19.0-rc1-xfsx #rc1 PREEMPT(lazy) dbf607ef4c142c563f76d706e71af9731d7b9c90
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-4.module+el8.8.0+21164+ed375313 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl+0x4a/0x70
ubsan_epilogue+0x5/0x2b
__ubsan_handle_shift_out_of_bounds.cold+0x5e/0x113
__remove_instance.part.0.constprop.0.cold+0x18/0x26f
instance_rmdir+0xf3/0x110
tracefs_syscall_rmdir+0x4d/0x90
vfs_rmdir+0x139/0x230
do_rmdir+0x143/0x230
__x64_sys_rmdir+0x1d/0x20
do_syscall_64+0x44/0x230
entry_SYSCALL_64_after_hwframe+0x4b/0x53
RIP: 0033:0x7f7ae8e51f17
Code: f0 ff ff 73 01 c3 48 8b 0d de 2e 0e 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 54 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 8b 15 b1 2e 0e 00 f7 d8 64 89 02 b8
RSP: 002b:00007ffd90743f08 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 00007ffd907440f8 RCX: 00007f7ae8e51f17
RDX: 00007f7ae8f3c5c0 RSI: 00007ffd90744a21 RDI: 00007ffd90744a21
RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000
R10: 00007f7ae8f35ac0 R11: 0000000000000246 R12: 00007ffd90744a21
R13: 0000000000000001 R14: 00007f7ae8f8b000 R15: 000055e5283e6a98
</TASK>
---[ end trace ]---
whilst tearing down an ftrace instance. TRACE_FLAGS_MAX_SIZE is now 64bit,
so the mask comparison expression must be typecast to a u64 value to
avoid an overflow. AFAICT, ZEROED_TRACE_FLAGS is already cast to ULL
so this is ok.
Link: https://patch.msgid.link/20251216174950.GA7705@frogsfrogsfrogs
Fixes:
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Steven Rostedt
|
ef7f38df89 |
tracing: Do not register unsupported perf events
Synthetic events currently do not have a function to register perf events.
This leads to calling the tracepoint register functions with a NULL
function pointer which triggers:
------------[ cut here ]------------
WARNING: kernel/tracepoint.c:175 at tracepoint_add_func+0x357/0x370, CPU#2: perf/2272
Modules linked in: kvm_intel kvm irqbypass
CPU: 2 UID: 0 PID: 2272 Comm: perf Not tainted 6.18.0-ftest-11964-ge022764176fc-dirty #323 PREEMPTLAZY
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.17.0-debian-1.17.0-1 04/01/2014
RIP: 0010:tracepoint_add_func+0x357/0x370
Code: 28 9c e8 4c 0b f5 ff eb 0f 4c 89 f7 48 c7 c6 80 4d 28 9c e8 ab 89 f4 ff 31 c0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc <0f> 0b 49 c7 c6 ea ff ff ff e9 ee fe ff ff 0f 0b e9 f9 fe ff ff 0f
RSP: 0018:ffffabc0c44d3c40 EFLAGS: 00010246
RAX: 0000000000000001 RBX: ffff9380aa9e4060 RCX: 0000000000000000
RDX: 000000000000000a RSI: ffffffff9e1d4a98 RDI: ffff937fcf5fd6c8
RBP: 0000000000000001 R08: 0000000000000007 R09: ffff937fcf5fc780
R10: 0000000000000003 R11: ffffffff9c193910 R12: 000000000000000a
R13: ffffffff9e1e5888 R14: 0000000000000000 R15: ffffabc0c44d3c78
FS: 00007f6202f5f340(0000) GS:ffff93819f00f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d3162281a8 CR3: 0000000106a56003 CR4: 0000000000172ef0
Call Trace:
<TASK>
tracepoint_probe_register+0x5d/0x90
synth_event_reg+0x3c/0x60
perf_trace_event_init+0x204/0x340
perf_trace_init+0x85/0xd0
perf_tp_event_init+0x2e/0x50
perf_try_init_event+0x6f/0x230
? perf_event_alloc+0x4bb/0xdc0
perf_event_alloc+0x65a/0xdc0
__se_sys_perf_event_open+0x290/0x9f0
do_syscall_64+0x93/0x7b0
? entry_SYSCALL_64_after_hwframe+0x76/0x7e
? trace_hardirqs_off+0x53/0xc0
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Instead, have the code return -ENODEV, which doesn't warn and has perf
error out with:
# perf record -e synthetic:futex_wait
Error:
The sys_perf_event_open() syscall returned with 19 (No such device) for event (synthetic:futex_wait).
"dmesg | grep -i perf" may provide additional information.
Ideally perf should support synthetic events, but for now just fix the
warning. The support can come later.
Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://patch.msgid.link/20251216182440.147e4453@gandalf.local.home
Fixes:
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Linus Torvalds
|
ea1013c153 |
bpf-fixes
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Linus Torvalds
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dbf89321bf |
sched_ext: Fixes for v6.19-rc1
- Fix memory leak when destroying helper kthread workers during scheduler disable. - Fix bypass depth accounting on scx_enable() failure which could leave the system permanently in bypass mode. - Fix missing preemption handling when moving tasks to local DSQs via scx_bpf_dsq_move(). - Misc fixes including NULL check for put_prev_task(), flushing stdout in selftests, and removing unused code. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCaUA9aQ4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGXWKAP9VeREr2ceRFd3WK5vFsFzCGh1L8rRu+t352MGL qWXkzQD/apLFSo5RQZ0tE8qORwKM9hNhS8QkVJhlsv5VZRWMBQI= =ueoE -----END PGP SIGNATURE----- Merge tag 'sched_ext-for-6.19-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext Pull sched_ext fixes from Tejun Heo: - Fix memory leak when destroying helper kthread workers during scheduler disable - Fix bypass depth accounting on scx_enable() failure which could leave the system permanently in bypass mode - Fix missing preemption handling when moving tasks to local DSQs via scx_bpf_dsq_move() - Misc fixes including NULL check for put_prev_task(), flushing stdout in selftests, and removing unused code * tag 'sched_ext-for-6.19-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext: sched_ext: Remove unused code in the do_pick_task_scx() selftests/sched_ext: flush stdout before test to avoid log spam sched_ext: Fix missing post-enqueue handling in move_local_task_to_local_dsq() sched_ext: Factor out local_dsq_post_enq() from dispatch_enqueue() sched_ext: Fix bypass depth leak on scx_enable() failure sched/ext: Avoid null ptr traversal when ->put_prev_task() is called with NULL next sched_ext: Fix the memleak for sch->helper objects |
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Linus Torvalds
|
6b63f90fa2 |
cgroup: Fixes for v6.19-rc1
- Fix a race condition in css_rstat_updated() where CMPXCHG without LOCK prefix could cause lnode corruption when the flusher runs concurrently on another CPU. The issue was introduced in 6.17 and causes memcg stats to become corrupted in production. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCaUA8mg4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGXhaAQDSk/ywLzJG807gzvhC5QLcY8kYzUUFHJ4TQAFp 08UqOAEA9yDgBHPqkp6ucjEJMG+2esE9A5NJB2LeEjG8ZZOCDQM= =Kcfd -----END PGP SIGNATURE----- Merge tag 'cgroup-for-6.19-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup fix from Tejun Heo: - Fix a race condition in css_rstat_updated() where CMPXCHG without LOCK prefix could cause lnode corruption when the flusher runs concurrently on another CPU. The issue was introduced in 6.17 and causes memcg stats to become corrupted in production. * tag 'cgroup-for-6.19-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup: rstat: use LOCK CMPXCHG in css_rstat_updated |
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Zqiang
|
bb27226f0d |
sched_ext: Remove unused code in the do_pick_task_scx()
The kick_idle variable is no longer used, this commit therefore remove it and also remove associated code in the do_pick_task_scx(). Signed-off-by: Zqiang <qiang.zhang@linux.dev> Reviewed-by: Andrea Righi <arighi@nvidia.com> Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
||
|
Linus Torvalds
|
4a298a43f5 |
Fix CPU hotplug callbacks to disable interrupts on UP kernels.
Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmk74mgRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1jS2g/+NPDw1R7yAPHlTaZO6CduYSENXzTOjmG3 BxdWERuta3Z78CNJZ5mtbrL1mBccG29oN+EZFGrKbDuxrR6SoglWUr1x1pYJRDyp h0DvBfzewXcVwOCiBQpqVzuQIzPqsF1IfdDP6eIGnkhnSAEi6ObIZeAbzBzZRovD dccU5e0LAIffTmAyKFYIqD4Fu90bzwJ3dAE1b0tP4mnm+jFGitdd8vb8mowiftOk Lij8hsy8bg2A5VThIlKow0ya4uc6Bb3ZGj6aiMHoGMPbB2pu3o8bNH/K9d1MsKIe AdZ6Y8mFriYYk3GEI3aWaoRkEXCZFX2IcOUS++yqvrOb88iJpW7jujgRIRvX0Px4 5xgHomQwW9XQKJgNYU/xLgpQSvBH4IzGDX5Uf8oU+hqcjYJBJjy21Dk9JGJymjv/ /jTq11Bd9xqzyv9W2Ysg2CfOA29+jGe8XlZU9ucOKE1bz09D+8R+H8X/LZtldjMa Xbr+7HG9AD13gLJW+PfRQbJR5CwoCvh9dPMzWtFLykxBYT/mQK5gs4OQDaG+JFsz 8ov+F28O1KBCtcK+v2M/2mQlo51y6RI/t5cw1sVSosgORjHPIVpPjbbTGi0r4MKw PHBGdw0mb1dgsXMRNnCNwvfxZP/S1TnmbIkaT4THC0PqJHOloyrsVbXGD1u6F9In Gaodcvn7MbA= =jbkd -----END PGP SIGNATURE----- Merge tag 'smp-urgent-2025-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull CPU hotplug fix from Ingo Molnar: - Fix CPU hotplug callbacks to disable interrupts on UP kernels * tag 'smp-urgent-2025-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: cpu: Make atomic hotplug callbacks run with interrupts disabled on UP |
||
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Linus Torvalds
|
cba09e3ed0 |
Misc fixes:
- Fix NULL pointer dereference crash in the Intel PMU driver - Fix missing read event generation on task exit - Fix AMD uncore driver init error handling - Fix whitespace noise Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmk74boRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1hpjw//cILE+pfjJKc+rhpY1DTBi4GMsIlL7SGH 8sZhelj+u1N9+gg2xM2PJL+2MV5nSTmFnFoXyHn5seAEmaKwJHsELTIDGa37PmrQ SEI4X5TQQ3M6XD8AWgvc+okdoxh0eQSZj0MOOCU6X+2RaQi4BuMuRa8Omz18NEof 2Sm6+rC1XICzsSKyJFBRAwPeQcrW7oVsaVD0z+bPVimn17IF+euKIkTbMEBahjGJ 3ejN/l37Fc7UrfX9nSVLiS3WdueCdagT0QN6eRDiZDZ446Rac8cqtvs0vI+YG50V 6lD+WcVGj2MF6rq7x7VXIxdijHQXE8ycH5x3FKqg5b4iX+l0oF2sBcwdaFa0hiUB a0gjUO6bCqPzaXFFbEGBhewn8W2imv4pdQbf8G3GS+Jpox5S6XxVNJyoRj6e5QZS xXO/6F50oMgeMiOREf/mmADjX6ZrLMcCEPQ4d1vqOmatvn46oiW/mifClK7Vnt3J hprqhtvZ/CEICe5nDXEbZRClzBcGIMYw2WyrlmFKJ1VCCZMuH5gwi866wIcT2nQk qhOeBJxPbAD8v59YL78rix4pLayXOi8DISedTtEzEzumaLEGJFo1YkXB5U3PJvcQ dps6fyPaGNVH7+rVHlmNfokOTiNm2n9vZOhqxFYouLIEzgmmY9LN7oUQsPORwA4Z aYgKfuEckV4= =8ILq -----END PGP SIGNATURE----- Merge tag 'perf-urgent-2025-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf event fixes from Ingo Molnar: - Fix NULL pointer dereference crash in the Intel PMU driver - Fix missing read event generation on task exit - Fix AMD uncore driver init error handling - Fix whitespace noise * tag 'perf-urgent-2025-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/intel: Fix NULL event dereference crash in handle_pmi_common() perf/core: Fix missing read event generation on task exit perf/x86/amd/uncore: Fix the return value of amd_uncore_df_event_init() on error perf/uprobes: Remove <space><Tab> whitespace noise |
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Linus Torvalds
|
db0130185e |
Misc fixes:
- Fix error code in the irqchip/mchp-eic driver - Fix setup_percpu_irq() affinity assumptions - Remove the unused irq_domain_add_tree() function Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmk74RgRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1gSEw/+IwHsSH9a4fOJGwV+vlwljy3zw6Sbmfwh D8C+jtVBQwocYzb/snbTvWnHJuhGwyLh6gVcYDDwJj/8IRGXnKVm7S1UKpV/XpRl O/dhqo8uogjqVAlo7osqTlYlwSGVLBY++iYCZrt9cY/Hn1bCm0Oz19/wbSJupHqp G/aG05iX4SRDHhTI8oWp7oEnnS1Hyox/2CKYHEBQoR2BapJL10exHqnyDpQ48pgL 60LCQbPeZp5KArQ+NRkc4RbcHBW6tsBJQUPc+m71H5HJTuetxwQ7uNuc3UsaR6jI 0A/vBryzeS5d88+FO08WxAYaiSENaGBAZ7aAKVbuiSoddwuRBUhvW6OYvWIGNqJG gCk4YB9K5li/2slrQdS4BQhq8thdVGkgzcSDFiFLyYmg7NjECPpr4IWggKwFT2zn hTF6tjuanBL9jew4Zxw21WcoJa3Kz6FXwSbU+PfWUUb+xc0/zouai17vkP8qwXR6 xeMqVJCZjb88VXUvL42xqKjIYD4x6UaoUqOtXjfO7xa40XC+2KVmALRInbSdTDpa 9MsJg6Mi2C+hYPXM1fPCymbktZoBSWnzi8vGUbA9CegyP9J4Zhpl8vmDIn+mXMmB Lu7pGAotSWHnXf9oCqAJ4eioaAj4V6HtIPKkSpmQGozifYMvlEI+boIwfkS2sJWK lLGe7LH6QeU= =/KYE -----END PGP SIGNATURE----- Merge tag 'irq-urgent-2025-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq fixes from Ingo Molnar: - Fix error code in the irqchip/mchp-eic driver - Fix setup_percpu_irq() affinity assumptions - Remove the unused irq_domain_add_tree() function * tag 'irq-urgent-2025-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/mchp-eic: Fix error code in mchp_eic_domain_alloc() irqdomain: Delete irq_domain_add_tree() genirq: Allow NULL affinity for setup_percpu_irq() |
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Linus Torvalds
|
9d9c1cfec0 |
There are no significant series in this small merge. Please see the
individual changelogs for details. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaTsgBwAKCRDdBJ7gKXxA jkSIAP4jD66nEC2QyKTiv9XvXi8rpKz6RGAHNZSam0ucI5WKswEAoflmlqsoD/Kk sN3YLwLztzCJIYU7tT3IRaPK0irwDAo= =nkux -----END PGP SIGNATURE----- Merge tag 'mm-nonmm-stable-2025-12-11-11-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc updates from Andrew Morton: "There are no significant series in this small merge. Please see the individual changelogs for details" [ Editor's note: it's mainly ocfs2 and a couple of random fixes ] * tag 'mm-nonmm-stable-2025-12-11-11-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: mm: memfd_luo: add CONFIG_SHMEM dependency mm: shmem: avoid build warning for CONFIG_SHMEM=n ocfs2: fix memory leak in ocfs2_merge_rec_left() ocfs2: invalidate inode if i_mode is zero after block read ocfs2: avoid -Wflex-array-member-not-at-end warning ocfs2: convert remaining read-only checks to ocfs2_emergency_state ocfs2: add ocfs2_emergency_state helper and apply to setattr checkpatch: add uninitialized pointer with __free attribute check args: fix documentation to reflect the correct numbers ocfs2: fix kernel BUG in ocfs2_find_victim_chain liveupdate: luo_core: fix redundant bound check in luo_ioctl() ocfs2: validate inline xattr size and entry count in ocfs2_xattr_ibody_list fs/fat: remove unnecessary wrapper fat_max_cache() ocfs2: replace deprecated strcpy with strscpy ocfs2: check tl_used after reading it from trancate log inode liveupdate: luo_file: don't use invalid list iterator |
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Thomas Gleixner
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fbbd7ce627 |
genirq: Don't overwrite interrupt thread flags on setup
Chris reported that the recent affinity management changes result in
overwriting the already initialized thread flags.
Use set_bit() to set the affinity bit instead of assigning the bit value to
the flags.
Fixes:
|
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Tejun Heo
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f5e1e5ec20 |
sched_ext: Fix missing post-enqueue handling in move_local_task_to_local_dsq()
move_local_task_to_local_dsq() is used when moving a task from a non-local
DSQ to a local DSQ on the same CPU. It directly manipulates the local DSQ
without going through dispatch_enqueue() and was missing the post-enqueue
handling that triggers preemption when SCX_ENQ_PREEMPT is set or the idle
task is running.
The function is used by move_task_between_dsqs() which backs
scx_bpf_dsq_move() and may be called while the CPU is busy.
Add local_dsq_post_enq() call to move_local_task_to_local_dsq(). As the
dispatch path doesn't need post-enqueue handling, add SCX_RQ_IN_BALANCE
early exit to keep consume_dispatch_q() behavior unchanged and avoid
triggering unnecessary resched when scx_bpf_dsq_move() is used from the
dispatch path.
Fixes:
|
||
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Tejun Heo
|
530b6637c7 |
sched_ext: Factor out local_dsq_post_enq() from dispatch_enqueue()
Factor out local_dsq_post_enq() which performs post-enqueue handling for local DSQs - triggering resched_curr() if SCX_ENQ_PREEMPT is specified or if the current CPU is idle. No functional change. This will be used by the next patch to fix move_local_task_to_local_dsq(). Cc: stable@vger.kernel.org # v6.12+ Reviewed-by: Andrea Righi <arighi@nvidia.com> Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Tejun Heo
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9f769637a9 |
sched_ext: Fix bypass depth leak on scx_enable() failure
scx_enable() calls scx_bypass(true) to initialize in bypass mode and then
scx_bypass(false) on success to exit. If scx_enable() fails during task
initialization - e.g. scx_cgroup_init() or scx_init_task() returns an error -
it jumps to err_disable while bypass is still active. scx_disable_workfn()
then calls scx_bypass(true/false) for its own bypass, leaving the bypass depth
at 1 instead of 0. This causes the system to remain permanently in bypass mode
after a failed scx_enable().
Failures after task initialization is complete - e.g. scx_tryset_enable_state()
at the end - already call scx_bypass(false) before reaching the error path and
are not affected. This only affects a subset of failure modes.
Fix it by tracking whether scx_enable() called scx_bypass(true) in a bool and
having scx_disable_workfn() call an extra scx_bypass(false) to clear it. This
is a temporary measure as the bypass depth will be moved into the sched
instance, which will make this tracking unnecessary.
Fixes:
|
||
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Arnd Bergmann
|
601cc399a0 |
mm: memfd_luo: add CONFIG_SHMEM dependency
The new memfd code fails to link without SHMEM:
aarch64-linux-ld: mm/memfd_luo.o: in function `memfd_luo_retrieve_folios':
memfd_luo.c:(.text.memfd_luo_retrieve_folios+0xdc): undefined reference to `shmem_add_to_page_cache'
memfd_luo.c:(.text.memfd_luo_retrieve_folios+0x11c): undefined reference to `shmem_inode_acct_blocks'
memfd_luo.c:(.text.memfd_luo_retrieve_folios+0x134): undefined reference to `shmem_recalc_inode'
Add a Kconfig dependency to disallow that configuration.
Link: https://lkml.kernel.org/r/20251204100203.1034394-1-arnd@kernel.org
Fixes:
|
||
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Pasha Tatashin
|
bf2c7bf5c4 |
liveupdate: luo_core: fix redundant bound check in luo_ioctl()
The kernel test robot reported a Smatch warning: kernel/liveupdate/luo_core.c:402 luo_ioctl() warn: unsigned 'nr' is never less than zero. This occurs because 'nr' is unsigned and LIVEUPDATE_CMD_BASE is currently defined as 0, making the check (nr < LIVEUPDATE_CMD_BASE) always false. Remove the explicit lower bound check. The logic remains correct because 'nr' is unsigned; if nr is less than LIVEUPDATE_CMD_BASE, the expression (nr - LIVEUPDATE_CMD_BASE) will wrap around to a large positive value. This will inevitably be larger than ARRAY_SIZE(luo_ioctl_ops) and be caught by the upper bound check. Link: https://lkml.kernel.org/r/20251130010919.1488230-1-pasha.tatashin@soleen.com Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com> Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202511280300.6pvBmXUS-lkp@intel.com/ Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: David Matlack <dmatlack@google.com> Cc: Pratyush Yadav <pratyush@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
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Dan Carpenter
|
b2135d1cb0 |
liveupdate: luo_file: don't use invalid list iterator
If we exit a list_for_each_entry() without hitting a break then the list iterator points to an offset from the list_head. It's a non-NULL but invalid pointer and dereferencing it isn't allowed. Introduce a new "found" variable to test instead. Link: https://lkml.kernel.org/r/aSlMc4SS09Re4_xn@stanley.mountain Fixes: 3ee1d673194e ("liveupdate: luo_file: implement file systems callbacks") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/r/202511280420.y9O4fyhX-lkp@intel.com/ Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Pratyush Yadav <pratyush@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Linus Torvalds
|
0723a166d1 |
more s390 updates for 6.19 merge window
- Use the MSI parent domain API instead of the legacy API for setup and teardown of PCI MSI IRQs - Select POSIX_CPU_TIMERS_TASK_WORK now that VIRT_XFER_TO_GUEST_WORK has been implemented for s390 - Fix a KVM bug which can lead to guest memory corruption - Fix KASAN shadow memory mapping for hotplugged memory - Minor bug fixes and improvements -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEECMNfWEw3SLnmiLkZIg7DeRspbsIFAmk5WtQACgkQIg7DeRsp bsKOwRAAg7uNYB0nU5CYl/0GeExumHBxQT/B1Umxg8lCDf4rwAPwwSrV3Dpp04h5 8FpKH42x8sig1yKuqjrBgHTlRofmSlZOrtDI9xv/dtp8yJWkAaMY0Ec8sf1VwEEO dgyEPH567ja+mWu5z74eFmxYSV5dsgcJ707DICTyDXB3DaIzmVH5D5f8yYbMs8eL gJ4bAuRkzwV+hp1UXLaWWELDrTX2KpQ3EBPz/2SuS8e3KbmL7MuDRdMbTJ7oEb1+ fGGnm3qFhHszx5fGWUv/BrGsQidwZTe459JdQtKcQUsPkGqBjsbhmiq9ApomD2+7 MJFDGDVHt623iBNwDwygAPCrWrKoVUFlw5MaKfztvSiuKt19N6OrwN0R4VA8P46I m9mVRSLeXTv4GzZcTmLsRb2cLJ3Z6co2HuDli4X1Jg3TTWBFzx0Jscp9dB1QKmoI EXBX44LoL5bUZeh5cihqGC5YBuXeaYyMnnsP56eJhq56QK9r4WDMcvGezBbzbkHE I3GjmFwEUr3U9hSx4xmUGh6pry5PLkuDch5So/vh1miAdHjZFFthXHK2s5UI+HUl OGjNxI9q2WzX4bb1C090zVljvYAsP6YzKnk7Ks76+0mEBvykTsGx3Ms4oS1L0k5+ Z8R2J0BLfcBQU7pL0QoYE/fO2J5wo+atp/cBLwc2hd+G9YEvdTs= =Nbs5 -----END PGP SIGNATURE----- Merge tag 's390-6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull more s390 updates from Heiko Carstens: - Use the MSI parent domain API instead of the legacy API for setup and teardown of PCI MSI IRQs - Select POSIX_CPU_TIMERS_TASK_WORK now that VIRT_XFER_TO_GUEST_WORK has been implemented for s390 - Fix a KVM bug which can lead to guest memory corruption - Fix KASAN shadow memory mapping for hotplugged memory - Minor bug fixes and improvements * tag 's390-6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/bug: Add missing alignment s390/bug: Add missing CONFIG_BUG ifdef again KVM: s390: Fix gmap_helper_zap_one_page() again s390/pci: Migrate s390 IRQ logic to IRQ domain API genirq: Change hwirq parameter to irq_hw_number_t s390: Select POSIX_CPU_TIMERS_TASK_WORK s390: Unmap early KASAN shadow on memory offlining s390/vmem: Support 2G page splitting for KASAN shadow freeing s390/boot: Use entire page for PTEs s390/vmur: Use scnprintf() instead of sprintf() |
||
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Linus Torvalds
|
840b22edd5 |
dma-mapping fixes for Linux 6.19:
- last minute fix for missing parenthesis in the recently merged code (Hans de Goede) and removal of the excessive, non-fatal warnings (Dave Kleikamp) -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSrngzkoBtlA8uaaJ+Jp1EFxbsSRAUCaTmllwAKCRCJp1EFxbsS RNDxAQCZJ9/D9nJ+hbC2oVPyoenmhSfMqc9ZniiR8/z8UqBfqgEAsWWayVyJXiwp aIWXvW6lnUGzgNZ64ZKeNWvKK3uJOgg= =9lhd -----END PGP SIGNATURE----- Merge tag 'dma-mapping-6.19-2025-12-10' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux Pull dma-mapping fixes from Marek Szyprowski: - last minute fix for missing parenthesis in recently merged code (Hans de Goede) - removal of excessive, non-fatal warnings (Dave Kleikamp) * tag 'dma-mapping-6.19-2025-12-10' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux: dma-mapping: Fix DMA_BIT_MASK() macro being broken dma/pool: eliminate alloc_pages warning in atomic_pool_expand |
||
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Shuran Liu
|
ac44dcc788 |
bpf: Fix verifier assumptions of bpf_d_path's output buffer
Commit |
||
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Linus Torvalds
|
0048fbb401 |
Futex changes for v6.19:
- Standardize on ktime_t in restart_block::time as well
(Thomas Weißschuh)
- Futex selftests:
- Add robust list testcases (André Almeida)
- Formatting fixes/cleanups (Carlos Llamas)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-futex-2025-12-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull futex updates from Ingo Molnar:
- Standardize on ktime_t in restart_block::time as well (Thomas
Weißschuh)
- Futex selftests:
- Add robust list testcases (André Almeida)
- Formatting fixes/cleanups (Carlos Llamas)
* tag 'locking-futex-2025-12-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: Store time as ktime_t in restart block
selftests/futex: Create test for robust list
selftests/futex: Skip tests if shmget unsupported
selftests/futex: Add newline to ksft_exit_fail_msg()
selftests/futex: Remove unused test_futex_mpol()
|
||
|
T.J. Mercier
|
234483565d |
bpf: Fix truncated dmabuf iterator reads
If there is a large number (hundreds) of dmabufs allocated, the text
output generated from dmabuf_iter_seq_show can exceed common user buffer
sizes (e.g. PAGE_SIZE) necessitating multiple start/stop cycles to
iterate through all dmabufs. However the dmabuf iterator currently
returns NULL in dmabuf_iter_seq_start for all non-zero pos values, which
results in the truncation of the output before all dmabufs are handled.
After dma_buf_iter_begin / dma_buf_iter_next, the refcount of the buffer
is elevated so that the BPF iterator program can run without holding any
locks. When a stop occurs, instead of immediately dropping the reference
on the buffer, stash a pointer to the buffer in seq->priv until
either start is called or the iterator is released. This also enables
the resumption of iteration without first walking through the list of
dmabufs based on the pos value.
Fixes:
|
||
|
Josh Poimboeuf
|
ca45c84afb |
bpf: Add bpf_has_frame_pointer()
Introduce a bpf_has_frame_pointer() helper that unwinders can call to determine whether a given instruction pointer is within the valid frame pointer region of a BPF JIT program or trampoline (i.e., after the prologue, before the epilogue). This will enable livepatch (with the ORC unwinder) to reliably unwind through BPF JIT frames. Acked-by: Song Liu <song@kernel.org> Acked-and-tested-by: Andrey Grodzovsky <andrey.grodzovsky@crowdstrike.com> Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Link: https://lore.kernel.org/r/fd2bc5b4e261a680774b28f6100509fd5ebad2f0.1764818927.git.jpoimboe@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org> Reviewed-by: Jiri Olsa <jolsa@kernel.org> |
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|
Sebastian Andrzej Siewior
|
c94291914b |
cpu: Make atomic hotplug callbacks run with interrupts disabled on UP
On SMP systems the CPU hotplug callbacks in the "starting" range are
invoked while the CPU is brought up and interrupts are still
disabled. Callbacks which are added later are invoked via the
hotplug-thread on the target CPU and interrupts are explicitly disabled.
In the UP case callbacks which are added later are invoked directly without
the thread indirection. This is in principle okay since there is just one
CPU but those callbacks are invoked with interrupt disabled code. That's
incorrect as those callbacks assume interrupt disabled context.
Disable interrupts before invoking the callbacks on UP if the state is
atomic and interrupts are expected to be disabled. The "save" part is
required because this is also invoked early in the boot process while
interrupts are disabled and must not be enabled prematurely.
Fixes:
|
||
|
Marc Zyngier
|
89acaa5537 |
genirq: Allow NULL affinity for setup_percpu_irq()
setup_percpu_irq() was forgotten when the percpu_devid infrastructure was
updated to deal with CPU affinities.
In order to keep ignoring users of this legacy API, provide sensible
defaults by setting the affinity to cpu_online_mask if none was provided by
the caller.
Fixes:
|
||
|
Thaumy Cheng
|
c418d8b4d7 |
perf/core: Fix missing read event generation on task exit
For events with inherit_stat enabled, a "read" event will be generated
to collect per task event counts on task exit.
The call chain is as follows:
do_exit
-> perf_event_exit_task
-> perf_event_exit_task_context
-> perf_event_exit_event
-> perf_remove_from_context
-> perf_child_detach
-> sync_child_event
-> perf_event_read_event
However, the child event context detaches the task too early in
perf_event_exit_task_context, which causes sync_child_event to never
generate the read event in this case, since child_event->ctx->task is
always set to TASK_TOMBSTONE. Fix that by moving context lock section
backward to ensure ctx->task is not set to TASK_TOMBSTONE before
generating the read event.
Because perf_event_free_task calls perf_event_exit_task_context with
exit = false to tear down all child events from the context, and the
task never lived, accessing the task PID can lead to a use-after-free.
To fix that, let sync_child_event read task from argument and move the
call to the only place it should be triggered to avoid the effect of
setting ctx->task to TASK_TOMESTONE, and add a task parameter to
perf_event_exit_event to trigger the sync_child_event properly when
needed.
This bug can be reproduced by running "perf record -s" and attaching to
any program that generates perf events in its child tasks. If we check
the result with "perf report -T", the last line of the report will leave
an empty table like "# PID TID", which is expected to contain the
per-task event counts by design.
Fixes:
|
||
|
Jakub Kicinski
|
e56cadaa27 |
ynl: add regen hint to new headers
Recent commit
|
||
|
Shakeel Butt
|
3309b63a22 |
cgroup: rstat: use LOCK CMPXCHG in css_rstat_updated
On x86-64, this_cpu_cmpxchg() uses CMPXCHG without LOCK prefix which means it is only safe for the local CPU and not for multiple CPUs. Recently the commit |
||
|
John Stultz
|
12b5cd99a0 |
sched/ext: Avoid null ptr traversal when ->put_prev_task() is called with NULL next
Early when trying to get sched_ext and proxy-exe working together,
I kept tripping over NULL ptr in put_prev_task_scx() on the line:
if (sched_class_above(&ext_sched_class, next->sched_class)) {
Which was due to put_prev_task() passes a NULL next, calling:
prev->sched_class->put_prev_task(rq, prev, NULL);
put_prev_task_scx() already guards for a NULL next in the
switch_class case, but doesn't seem to have a guard for
sched_class_above() check.
I can't say I understand why this doesn't trip usually without
proxy-exec. And in newer kernels there are way fewer
put_prev_task(), and I can't easily reproduce the issue now
even with proxy-exec.
But we still have one put_prev_task() call left in core.c that
seems like it could trip this, so I wanted to send this out for
consideration.
tj: put_prev_task() can be called with NULL @next; however, when @p is
queued, that doesn't happen, so this condition shouldn't currently be
triggerable. The connection isn't straightforward or necessarily reliable,
so add the NULL check even if it can't currently be triggered.
Link: http://lkml.kernel.org/r/20251206022218.1541878-1-jstultz@google.com
Signed-off-by: John Stultz <jstultz@google.com>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
|
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|
Zqiang
|
517a44d185 |
sched_ext: Fix the memleak for sch->helper objects
This commit use kthread_destroy_worker() to release sch->helper
objects to fix the following kmemleak:
unreferenced object 0xffff888121ec7b00 (size 128):
comm "scx_simple", pid 1197, jiffies 4295884415
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 ad 4e ad de .............N..
ff ff ff ff 00 00 00 00 ff ff ff ff ff ff ff ff ................
backtrace (crc 587b3352):
kmemleak_alloc+0x62/0xa0
__kmalloc_cache_noprof+0x28d/0x3e0
kthread_create_worker_on_node+0xd5/0x1f0
scx_enable.isra.210+0x6c2/0x25b0
bpf_scx_reg+0x12/0x20
bpf_struct_ops_link_create+0x2c3/0x3b0
__sys_bpf+0x3102/0x4b00
__x64_sys_bpf+0x79/0xc0
x64_sys_call+0x15d9/0x1dd0
do_syscall_64+0xf0/0x470
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Fixes:
|
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|
Dave Kleikamp
|
463d439bec |
dma/pool: eliminate alloc_pages warning in atomic_pool_expand
atomic_pool_expand iteratively tries the allocation while decrementing
the page order. There is no need to issue a warning if an attempted
allocation fails.
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Fixes:
|
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|
Tobias Schumacher
|
455a65260f |
genirq: Change hwirq parameter to irq_hw_number_t
The irqdomain implementation internally represents hardware IRQs as irq_hw_number_t, which is defined as unsigned long int. When providing an irq_hw_number_t to the generic_handle_domain() functions that expect and unsigned int hwirq, this can lead to a loss of information. Change the hwirq parameter to irq_hw_number_t to support the full range of hwirqs. Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com> Reviewed-by: Farhan Ali <alifm@linux.ibm.com> Signed-off-by: Tobias Schumacher <ts@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
||
|
Linus Torvalds
|
509d3f4584 |
Significant patch series in this pull request:
- The 6 patch series "panic: sys_info: Refactor and fix a potential
issue" from Andy Shevchenko fixes a build issue and does some cleanup in
ib/sys_info.c.
- The 9 patch series "Implement mul_u64_u64_div_u64_roundup()" from
David Laight enhances the 64-bit math code on behalf of a PWM driver and
beefs up the test module for these library functions.
- The 2 patch series "scripts/gdb/symbols: make BPF debug info available
to GDB" from Ilya Leoshkevich makes BPF symbol names, sizes, and line
numbers available to the GDB debugger.
- The 4 patch series "Enable hung_task and lockup cases to dump system
info on demand" from Feng Tang adds a sysctl which can be used to cause
additional info dumping when the hung-task and lockup detectors fire.
- The 6 patch series "lib/base64: add generic encoder/decoder, migrate
users" from Kuan-Wei Chiu adds a general base64 encoder/decoder to lib/
and migrates several users away from their private implementations.
- The 2 patch series "rbree: inline rb_first() and rb_last()" from Eric
Dumazet makes TCP a little faster.
- The 9 patch series "liveupdate: Rework KHO for in-kernel users" from
Pasha Tatashin reworks the KEXEC Handover interfaces in preparation for
Live Update Orchestrator (LUO), and possibly for other future clients.
- The 13 patch series "kho: simplify state machine and enable dynamic
updates" from Pasha Tatashin increases the flexibility of KEXEC
Handover. Also preparation for LUO.
- The 18 patch series "Live Update Orchestrator" from Pasha Tatashin is
a major new feature targeted at cloud environments. Quoting the [0/N]:
This series introduces the Live Update Orchestrator, a kernel subsystem
designed to facilitate live kernel updates using a kexec-based reboot.
This capability is critical for cloud environments, allowing hypervisors
to be updated with minimal downtime for running virtual machines. LUO
achieves this by preserving the state of selected resources, such as
memory, devices and their dependencies, across the kernel transition.
As a key feature, this series includes support for preserving memfd file
descriptors, which allows critical in-memory data, such as guest RAM or
any other large memory region, to be maintained in RAM across the kexec
reboot.
Mike Rappaport merits a mention here, for his extensive review and
testing work.
- The 3 patch series "kexec: reorganize kexec and kdump sysfs" from
Sourabh Jain moves the kexec and kdump sysfs entries from /sys/kernel/
to /sys/kernel/kexec/ and adds back-compatibility symlinks which can
hopefully be removed one day.
- The 2 patch series "kho: fixes for vmalloc restoration" from Mike
Rapoport fixes a BUG which was being hit during KHO restoration of
vmalloc() regions.
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Merge tag 'mm-nonmm-stable-2025-12-06-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
- "panic: sys_info: Refactor and fix a potential issue" (Andy Shevchenko)
fixes a build issue and does some cleanup in ib/sys_info.c
- "Implement mul_u64_u64_div_u64_roundup()" (David Laight)
enhances the 64-bit math code on behalf of a PWM driver and beefs up
the test module for these library functions
- "scripts/gdb/symbols: make BPF debug info available to GDB" (Ilya Leoshkevich)
makes BPF symbol names, sizes, and line numbers available to the GDB
debugger
- "Enable hung_task and lockup cases to dump system info on demand" (Feng Tang)
adds a sysctl which can be used to cause additional info dumping when
the hung-task and lockup detectors fire
- "lib/base64: add generic encoder/decoder, migrate users" (Kuan-Wei Chiu)
adds a general base64 encoder/decoder to lib/ and migrates several
users away from their private implementations
- "rbree: inline rb_first() and rb_last()" (Eric Dumazet)
makes TCP a little faster
- "liveupdate: Rework KHO for in-kernel users" (Pasha Tatashin)
reworks the KEXEC Handover interfaces in preparation for Live Update
Orchestrator (LUO), and possibly for other future clients
- "kho: simplify state machine and enable dynamic updates" (Pasha Tatashin)
increases the flexibility of KEXEC Handover. Also preparation for LUO
- "Live Update Orchestrator" (Pasha Tatashin)
is a major new feature targeted at cloud environments. Quoting the
cover letter:
This series introduces the Live Update Orchestrator, a kernel
subsystem designed to facilitate live kernel updates using a
kexec-based reboot. This capability is critical for cloud
environments, allowing hypervisors to be updated with minimal
downtime for running virtual machines. LUO achieves this by
preserving the state of selected resources, such as memory,
devices and their dependencies, across the kernel transition.
As a key feature, this series includes support for preserving
memfd file descriptors, which allows critical in-memory data, such
as guest RAM or any other large memory region, to be maintained in
RAM across the kexec reboot.
Mike Rappaport merits a mention here, for his extensive review and
testing work.
- "kexec: reorganize kexec and kdump sysfs" (Sourabh Jain)
moves the kexec and kdump sysfs entries from /sys/kernel/ to
/sys/kernel/kexec/ and adds back-compatibility symlinks which can
hopefully be removed one day
- "kho: fixes for vmalloc restoration" (Mike Rapoport)
fixes a BUG which was being hit during KHO restoration of vmalloc()
regions
* tag 'mm-nonmm-stable-2025-12-06-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (139 commits)
calibrate: update header inclusion
Reinstate "resource: avoid unnecessary lookups in find_next_iomem_res()"
vmcoreinfo: track and log recoverable hardware errors
kho: fix restoring of contiguous ranges of order-0 pages
kho: kho_restore_vmalloc: fix initialization of pages array
MAINTAINERS: TPM DEVICE DRIVER: update the W-tag
init: replace simple_strtoul with kstrtoul to improve lpj_setup
KHO: fix boot failure due to kmemleak access to non-PRESENT pages
Documentation/ABI: new kexec and kdump sysfs interface
Documentation/ABI: mark old kexec sysfs deprecated
kexec: move sysfs entries to /sys/kernel/kexec
test_kho: always print restore status
kho: free chunks using free_page() instead of kfree()
selftests/liveupdate: add kexec test for multiple and empty sessions
selftests/liveupdate: add simple kexec-based selftest for LUO
selftests/liveupdate: add userspace API selftests
docs: add documentation for memfd preservation via LUO
mm: memfd_luo: allow preserving memfd
liveupdate: luo_file: add private argument to store runtime state
mm: shmem: export some functions to internal.h
...
|
||
|
Linus Torvalds
|
09670b8c38 |
tracing fixes for v6.19:
- Fix accounting of stop_count in file release On opening the trace file, if "pause-on-trace" option is set, it will increment the stop_count. On file release, it checks if stop_count is set, and if so it decrements it. Since this code was originally written, the stop_count can be incremented by other use cases. This makes just checking the stop_count not enough to know if it should be decremented. Add a new iterator flag called "PAUSE" and have it set if the open disables tracing and only decrement the stop_count if that flag is set on close. - Remove length field in trace_seq_printf() of print_synth_event() When printing the synthetic event that has a static length array field, the vsprintf() of the trace_seq_printf() triggered a "(efault)" in the output. That's because the print_fmt replaced the "%.*s" with "%s" causing the arguments to be off. - Fix a bunch of typos -----BEGIN PGP SIGNATURE----- iIoEABYKADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCaTRsYBQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qrYpAQC3Qc5QMOlPjqGHXls/4IR4SBEAvsUi VZx3PdknfYCe3AD9HoYGOtrDDhSJ1tQbsWP5ud2jatHwL0zGAl3legNp7ww= =jlNP -----END PGP SIGNATURE----- Merge tag 'trace-v6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull tracing fixes from Steven Rostedt: - Fix accounting of stop_count in file release On opening the trace file, if "pause-on-trace" option is set, it will increment the stop_count. On file release, it checks if stop_count is set, and if so it decrements it. Since this code was originally written, the stop_count can be incremented by other use cases. This makes just checking the stop_count not enough to know if it should be decremented. Add a new iterator flag called "PAUSE" and have it set if the open disables tracing and only decrement the stop_count if that flag is set on close. - Remove length field in trace_seq_printf() of print_synth_event() When printing the synthetic event that has a static length array field, the vsprintf() of the trace_seq_printf() triggered a "(efault)" in the output. That's because the print_fmt replaced the "%.*s" with "%s" causing the arguments to be off. - Fix a bunch of typos * tag 'trace-v6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: tracing: Fix typo in trace_seq.c tracing: Fix typo in trace_probe.c tracing: Fix multiple typos in trace_osnoise.c tracing: Fix multiple typos in trace_events_user.c tracing: Fix typo in trace_events_trigger.c tracing: Fix typo in trace_events_hist.c tracing: Fix typo in trace_events_filter.c tracing: Fix multiple typos in trace_events.c tracing: Fix multiple typos in trace.c tracing: Fix typo in ring_buffer_benchmark.c tracing: Fix multiple typos in ring_buffer.c tracing: Fix typo in fprobe.c tracing: Fix typo in fpgraph.c tracing: Fix fixed array of synthetic event tracing: Fix enabling of tracing on file release |
||
|
Linus Torvalds
|
09bcd5ef66 |
Miscellaneous scheduler fixes/cleanups:
- Fix psi_dequeue() for Proxy Execution
- Fix hrtick() vs. scheduling context bug
- Fix unfairness caused by stalled tg_load_avg_contrib when the last task migrates out
- Fix whitespace noise in headers
- Remove a preempt-disable section in rt_mutex_setprio()
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2025-12-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
"Miscellaneous scheduler fixes/cleanups:
- Fix psi_dequeue() for Proxy Execution
- Fix hrtick() vs. scheduling context bug
- Fix unfairness caused by stalled tg_load_avg_contrib when the last
task migrates out
- Fix whitespace noise in headers
- Remove a preempt-disable section in rt_mutex_setprio()"
* tag 'sched-urgent-2025-12-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/core: Fix psi_dequeue() for Proxy Execution
sched/fair: Fix unfairness caused by stalled tg_load_avg_contrib when the last task migrates out
sched/rt: Remove a preempt-disable section in rt_mutex_setprio()
sched/hrtick: Fix hrtick() vs. scheduling context
sched/headers: Remove whitespace noise from kernel/sched/sched.h
|
||
|
Linus Torvalds
|
08b8ddac1f |
Address various objtool scalability bugs/inefficiencies exposed by
allmodconfig builds, plus improve the quality of alternatives instructions generated code and disassembly. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmk0FVoRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1iClg//dHY58dvrsp5Fzo10XgU99/kwzNEgl2b5 SMrSEbliTrehdpG4vBvig9tAMZurxOVIf6yDBEtV45XfD6w3tw6EFYpO1was9wTE R/80Ze6BAEeao782xN3sCpakU1Ogwbxhe4jYFZKE/WVbP9ZaeCI8qeBj3RAuOQ9y PCJzjD5fl9c2cAGDqCJEswxIptpP7eXoBo/V3Txf46M8/ffFcXdJbHN3HRBlszVs 5I9Wb2/vFmwJ4Yi4EO8H7KfzwaXA8wW/MJSDcM24P2/+o5iTqSLNd+rADFMW3XF2 /8b3uAy/6A6tT3ek1teNoM7qB9hRpM1pmpFwgjjTkjl8yamEp6P/W99qUN+UmfV+ NTiW9sz7ShhVTMCdALIljyjmji318crKYQBDulAHuEACpodcBg/GUGfuUcrjSRB/ C7PLatOpfMCODPRGPH4+8Wg8nnBGvOEjjODZBjAq2yU5aJnBeLPmbK2mtcaJtKi+ R0T2LIsNgmnEa4wRZbH8i4jXsgcbe6gD45Tx3qZpss7D4d9IyRWPO8v6GegFUpvh dw8qBqhgi1FzryZ/5uwh5IzkVq+iXHqkPBsV9w7CVSFF1Kc5w1/l7MXsEjkc7Xe3 qMjc43qsN0H/7ngoIA7yp4m7q87gqJMzReIfeIF4pGVtoULGQ+drN0jjQE/SHiKS /EM8IAAk0pU= =2DKc -----END PGP SIGNATURE----- Merge tag 'objtool-urgent-2025-12-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull objtool fixes from Ingo Molnar: "Address various objtool scalability bugs/inefficiencies exposed by allmodconfig builds, plus improve the quality of alternatives instructions generated code and disassembly" * tag 'objtool-urgent-2025-12-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Simplify .annotate_insn code generation output some more objtool: Add more robust signal error handling, detect and warn about stack overflows objtool: Remove newlines and tabs from annotation macros objtool: Consolidate annotation macros x86/asm: Remove ANNOTATE_DATA_SPECIAL usage x86/alternative: Remove ANNOTATE_DATA_SPECIAL usage objtool: Fix stack overflow in validate_branch() |
||
|
Linus Torvalds
|
a7405aa92f |
dma-mapping updates for Linux 6.19:
- next part of DMA mapping API refactoring to physical addresses as the primary interface instead of page+offset parameters; this time dma_map_ops callbacks are converted to physical addresses, what in turn results also in some simplification of architecture specific code (Leon Romanovsky and Jason Gunthorpe) - clarify that dma_map_benchmark is not a kernel self-test, but standalone tool (Qinxin Xia) -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSrngzkoBtlA8uaaJ+Jp1EFxbsSRAUCaTLpeQAKCRCJp1EFxbsS RKlAAQCo/gVslheoJ+h4Hk5oUjLfVQaiamJOlzxw12EVHVAs3AEA7GILIAL1GbGn EpkgwjIuz/J/4aGhNbYO6J+C1qMAHww= =aM6P -----END PGP SIGNATURE----- Merge tag 'dma-mapping-6.19-2025-12-05' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux Pull dma-mapping updates from Marek Szyprowski: - More DMA mapping API refactoring to physical addresses as the primary interface instead of page+offset parameters. This time dma_map_ops callbacks are converted to physical addresses, what in turn results also in some simplification of architecture specific code (Leon Romanovsky and Jason Gunthorpe) - Clarify that dma_map_benchmark is not a kernel self-test, but standalone tool (Qinxin Xia) * tag 'dma-mapping-6.19-2025-12-05' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux: dma-mapping: remove unused map_page callback xen: swiotlb: Convert mapping routine to rely on physical address x86: Use physical address for DMA mapping sparc: Use physical address DMA mapping powerpc: Convert to physical address DMA mapping parisc: Convert DMA map_page to map_phys interface MIPS/jazzdma: Provide physical address directly alpha: Convert mapping routine to rely on physical address dma-mapping: remove unused mapping resource callbacks xen: swiotlb: Switch to physical address mapping callbacks ARM: dma-mapping: Switch to physical address mapping callbacks ARM: dma-mapping: Reduce struct page exposure in arch_sync_dma*() dma-mapping: convert dummy ops to physical address mapping dma-mapping: prepare dma_map_ops to conversion to physical address tools/dma: move dma_map_benchmark from selftests to tools/dma |
||
|
John Stultz
|
c2ae8b0df2 |
sched/core: Fix psi_dequeue() for Proxy Execution
Currently, if the sleep flag is set, psi_dequeue() doesn't
change any of the psi_flags.
This is because psi_task_switch() will clear TSK_ONCPU as well
as other potential flags (TSK_RUNNING), and the assumption is
that a voluntary sleep always consists of a task being dequeued
followed shortly there after with a psi_sched_switch() call.
Proxy Execution changes this expectation, as mutex-blocked tasks
that would normally sleep stay on the runqueue. But in the case
where the mutex-owning task goes to sleep, or the owner is on a
remote cpu, we will then deactivate the blocked task shortly
after.
In that situation, the mutex-blocked task will have had its
TSK_ONCPU cleared when it was switched off the cpu, but it will
stay TSK_RUNNING. Then if we later dequeue it (as currently done
if we hit a case find_proxy_task() can't yet handle, such as the
case of the owner being on another rq or a sleeping owner)
psi_dequeue() won't change any state (leaving it TSK_RUNNING),
as it incorrectly expects a psi_task_switch() call to
immediately follow.
Later on when the task get woken/re-enqueued, and psi_flags are
set for TSK_RUNNING, we hit an error as the task is already
TSK_RUNNING:
psi: inconsistent task state! task=188:kworker/28:0 cpu=28 psi_flags=4 clear=0 set=4
To resolve this, extend the logic in psi_dequeue() so that
if the sleep flag is set, we also check if psi_flags have
TSK_ONCPU set (meaning the psi_task_switch is imminent) before
we do the shortcut return.
If TSK_ONCPU is not set, that means we've already switched away,
and this psi_dequeue call needs to clear the flags.
Fixes:
|
||
|
xupengbo
|
ca125231dd |
sched/fair: Fix unfairness caused by stalled tg_load_avg_contrib when the last task migrates out
When a task is migrated out, there is a probability that the tg->load_avg
value will become abnormal. The reason is as follows:
1. Due to the 1ms update period limitation in update_tg_load_avg(), there
is a possibility that the reduced load_avg is not updated to tg->load_avg
when a task migrates out.
2. Even though __update_blocked_fair() traverses the leaf_cfs_rq_list and
calls update_tg_load_avg() for cfs_rqs that are not fully decayed, the key
function cfs_rq_is_decayed() does not check whether
cfs->tg_load_avg_contrib is null. Consequently, in some cases,
__update_blocked_fair() removes cfs_rqs whose avg.load_avg has not been
updated to tg->load_avg.
Add a check of cfs_rq->tg_load_avg_contrib in cfs_rq_is_decayed(),
which fixes the case (2.) mentioned above.
Fixes:
|
||
|
Sebastian Andrzej Siewior
|
22abd83277 |
sched/rt: Remove a preempt-disable section in rt_mutex_setprio()
rt_mutex_setprio() has only one caller: rt_mutex_adjust_prio(). It
expects that task_struct::pi_lock and rt_mutex_base::wait_lock are held.
Both locks are raw_spinlock_t and are acquired with disabled interrupts.
Nevertheless rt_mutex_setprio() disables preemption while invoking
__balance_callbacks() and raw_spin_rq_unlock(). Even if one of the
balance callbacks unlocks the rq then it must not enable interrupts
because rt_mutex_base::wait_lock is still locked.
Therefore interrupts should remain disabled and disabling preemption is
not needed.
Commit
|
||
|
Peter Zijlstra
|
e38e529974 |
sched/hrtick: Fix hrtick() vs. scheduling context
The sched_class::task_tick() method is called on the donor sched_class, and sched_tick() hands it rq->donor as argument, which is consistent. However, while hrtick() uses the donor sched_class, it then passes rq->curr, which is inconsistent. Fix it. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: John Stultz <jstultz@google.com> Link: https://patch.msgid.link/20250918080205.442967033@infradead.org |
||
|
Ingo Molnar
|
dde3763365 |
sched/headers: Remove whitespace noise from kernel/sched/sched.h
A single case of space-Tab noise snuck in recently.
Fixes:
|
||
|
Linus Torvalds
|
208eed95fc |
soc: driver updates for 6.19
This is the first half of the driver changes:
- A treewide interface change to the "syscore" operations for
power management, as a preparation for future Tegra specific
changes.
- Reset controller updates with added drivers for LAN969x, eic770
and RZ/G3S SoCs.
- Protection of system controller registers on Renesas and Google SoCs,
to prevent trivially triggering a system crash from e.g. debugfs
access.
- soc_device identification updates on Nvidia, Exynos and Mediatek
- debugfs support in the ST STM32 firewall driver
- Minor updates for SoC drivers on AMD/Xilinx, Renesas, Allwinner, TI
- Cleanups for memory controller support on Nvidia and Renesas
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Merge tag 'soc-drivers-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC driver updates from Arnd Bergmann:
"This is the first half of the driver changes:
- A treewide interface change to the "syscore" operations for power
management, as a preparation for future Tegra specific changes
- Reset controller updates with added drivers for LAN969x, eic770 and
RZ/G3S SoCs
- Protection of system controller registers on Renesas and Google
SoCs, to prevent trivially triggering a system crash from e.g.
debugfs access
- soc_device identification updates on Nvidia, Exynos and Mediatek
- debugfs support in the ST STM32 firewall driver
- Minor updates for SoC drivers on AMD/Xilinx, Renesas, Allwinner, TI
- Cleanups for memory controller support on Nvidia and Renesas"
* tag 'soc-drivers-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (114 commits)
memory: tegra186-emc: Fix missing put_bpmp
Documentation: reset: Remove reset_controller_add_lookup()
reset: fix BIT macro reference
reset: rzg2l-usbphy-ctrl: Fix a NULL vs IS_ERR() bug in probe
reset: th1520: Support reset controllers in more subsystems
reset: th1520: Prepare for supporting multiple controllers
dt-bindings: reset: thead,th1520-reset: Add controllers for more subsys
dt-bindings: reset: thead,th1520-reset: Remove non-VO-subsystem resets
reset: remove legacy reset lookup code
clk: davinci: psc: drop unused reset lookup
reset: rzg2l-usbphy-ctrl: Add support for RZ/G3S SoC
reset: rzg2l-usbphy-ctrl: Add support for USB PWRRDY
dt-bindings: reset: renesas,rzg2l-usbphy-ctrl: Document RZ/G3S support
reset: eswin: Add eic7700 reset driver
dt-bindings: reset: eswin: Documentation for eic7700 SoC
reset: sparx5: add LAN969x support
dt-bindings: reset: microchip: Add LAN969x support
soc: rockchip: grf: Add select correct PWM implementation on RK3368
soc/tegra: pmc: Add USB wake events for Tegra234
amba: tegra-ahb: Fix device leak on SMMU enable
...
|
||
|
Linus Torvalds
|
7cd122b552 |
Some filesystems use a kinda-sorta controlled dentry refcount leak to pin
dentries of created objects in dcache (and undo it when removing those).
Reference is grabbed and not released, but it's not actually _stored_
anywhere. That works, but it's hard to follow and verify; among other
things, we have no way to tell _which_ of the increments is intended
to be an unpaired one. Worse, on removal we need to decide whether
the reference had already been dropped, which can be non-trivial if
that removal is on umount and we need to figure out if this dentry is
pinned due to e.g. unlink() not done. Usually that is handled by using
kill_litter_super() as ->kill_sb(), but there are open-coded special
cases of the same (consider e.g. /proc/self).
Things get simpler if we introduce a new dentry flag (DCACHE_PERSISTENT)
marking those "leaked" dentries. Having it set claims responsibility
for +1 in refcount.
The end result this series is aiming for:
* get these unbalanced dget() and dput() replaced with new primitives that
would, in addition to adjusting refcount, set and clear persistency flag.
* instead of having kill_litter_super() mess with removing the remaining
"leaked" references (e.g. for all tmpfs files that hadn't been removed
prior to umount), have the regular shrink_dcache_for_umount() strip
DCACHE_PERSISTENT of all dentries, dropping the corresponding
reference if it had been set. After that kill_litter_super() becomes
an equivalent of kill_anon_super().
Doing that in a single step is not feasible - it would affect too many places
in too many filesystems. It has to be split into a series.
This work has really started early in 2024; quite a few preliminary pieces
have already gone into mainline. This chunk is finally getting to the
meat of that stuff - infrastructure and most of the conversions to it.
Some pieces are still sitting in the local branches, but the bulk of
that stuff is here.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Merge tag 'pull-persistency' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull persistent dentry infrastructure and conversion from Al Viro:
"Some filesystems use a kinda-sorta controlled dentry refcount leak to
pin dentries of created objects in dcache (and undo it when removing
those). A reference is grabbed and not released, but it's not actually
_stored_ anywhere.
That works, but it's hard to follow and verify; among other things, we
have no way to tell _which_ of the increments is intended to be an
unpaired one. Worse, on removal we need to decide whether the
reference had already been dropped, which can be non-trivial if that
removal is on umount and we need to figure out if this dentry is
pinned due to e.g. unlink() not done. Usually that is handled by using
kill_litter_super() as ->kill_sb(), but there are open-coded special
cases of the same (consider e.g. /proc/self).
Things get simpler if we introduce a new dentry flag
(DCACHE_PERSISTENT) marking those "leaked" dentries. Having it set
claims responsibility for +1 in refcount.
The end result this series is aiming for:
- get these unbalanced dget() and dput() replaced with new primitives
that would, in addition to adjusting refcount, set and clear
persistency flag.
- instead of having kill_litter_super() mess with removing the
remaining "leaked" references (e.g. for all tmpfs files that hadn't
been removed prior to umount), have the regular
shrink_dcache_for_umount() strip DCACHE_PERSISTENT of all dentries,
dropping the corresponding reference if it had been set. After that
kill_litter_super() becomes an equivalent of kill_anon_super().
Doing that in a single step is not feasible - it would affect too many
places in too many filesystems. It has to be split into a series.
This work has really started early in 2024; quite a few preliminary
pieces have already gone into mainline. This chunk is finally getting
to the meat of that stuff - infrastructure and most of the conversions
to it.
Some pieces are still sitting in the local branches, but the bulk of
that stuff is here"
* tag 'pull-persistency' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (54 commits)
d_make_discardable(): warn if given a non-persistent dentry
kill securityfs_recursive_remove()
convert securityfs
get rid of kill_litter_super()
convert rust_binderfs
convert nfsctl
convert rpc_pipefs
convert hypfs
hypfs: swich hypfs_create_u64() to returning int
hypfs: switch hypfs_create_str() to returning int
hypfs: don't pin dentries twice
convert gadgetfs
gadgetfs: switch to simple_remove_by_name()
convert functionfs
functionfs: switch to simple_remove_by_name()
functionfs: fix the open/removal races
functionfs: need to cancel ->reset_work in ->kill_sb()
functionfs: don't bother with ffs->ref in ffs_data_{opened,closed}()
functionfs: don't abuse ffs_data_closed() on fs shutdown
convert selinuxfs
...
|
||
|
Linus Torvalds
|
7203ca412f |
Significant patch series in this merge are as follows:
- The 10 patch series "__vmalloc()/kvmalloc() and no-block support" from
Uladzislau Rezki reworks the vmalloc() code to support non-blocking
allocations (GFP_ATOIC, GFP_NOWAIT).
- The 2 patch series "ksm: fix exec/fork inheritance" from xu xin fixes
a rare case where the KSM MMF_VM_MERGE_ANY prctl state is not inherited
across fork/exec.
- The 4 patch series "mm/zswap: misc cleanup of code and documentations"
from SeongJae Park does some light maintenance work on the zswap code.
- The 5 patch series "mm/page_owner: add debugfs files 'show_handles'
and 'show_stacks_handles'" from Mauricio Faria de Oliveira enhances the
/sys/kernel/debug/page_owner debug feature. It adds unique identifiers
to differentiate the various stack traces so that userspace monitoring
tools can better match stack traces over time.
- The 2 patch series "mm/page_alloc: pcp->batch cleanups" from Joshua
Hahn makes some minor alterations to the page allocator's per-cpu-pages
feature.
- The 2 patch series "Improve UFFDIO_MOVE scalability by removing
anon_vma lock" from Lokesh Gidra addresses a scalability issue in
userfaultfd's UFFDIO_MOVE operation.
- The 2 patch series "kasan: cleanups for kasan_enabled() checks" from
Sabyrzhan Tasbolatov performs some cleanup in the KASAN code.
- The 2 patch series "drivers/base/node: fold node register and
unregister functions" from Donet Tom cleans up the NUMA node handling
code a little.
- The 4 patch series "mm: some optimizations for prot numa" from Kefeng
Wang provides some cleanups and small optimizations to the NUMA
allocation hinting code.
- The 5 patch series "mm/page_alloc: Batch callers of
free_pcppages_bulk" from Joshua Hahn addresses long lock hold times at
boot on large machines. These were causing (harmless) softlockup
warnings.
- The 2 patch series "optimize the logic for handling dirty file folios
during reclaim" from Baolin Wang removes some now-unnecessary work from
page reclaim.
- The 10 patch series "mm/damon: allow DAMOS auto-tuned for per-memcg
per-node memory usage" from SeongJae Park enhances the DAMOS auto-tuning
feature.
- The 2 patch series "mm/damon: fixes for address alignment issues in
DAMON_LRU_SORT and DAMON_RECLAIM" from Quanmin Yan fixes DAMON_LRU_SORT
and DAMON_RECLAIM with certain userspace configuration.
- The 15 patch series "expand mmap_prepare functionality, port more
users" from Lorenzo Stoakes enhances the new(ish)
file_operations.mmap_prepare() method and ports additional callsites
from the old ->mmap() over to ->mmap_prepare().
- The 8 patch series "Fix stale IOTLB entries for kernel address space"
from Lu Baolu fixes a bug (and possible security issue on non-x86) in
the IOMMU code. In some situations the IOMMU could be left hanging onto
a stale kernel pagetable entry.
- The 4 patch series "mm/huge_memory: cleanup __split_unmapped_folio()"
from Wei Yang cleans up and optimizes the folio splitting code.
- The 5 patch series "mm, swap: misc cleanup and bugfix" from Kairui
Song implements some cleanups and a minor fix in the swap discard code.
- The 8 patch series "mm/damon: misc documentation fixups" from SeongJae
Park does as advertised.
- The 9 patch series "mm/damon: support pin-point targets removal" from
SeongJae Park permits userspace to remove a specific monitoring target
in the middle of the current targets list.
- The 2 patch series "mm: MISC follow-up patches for linux/pgalloc.h"
from Harry Yoo implements a couple of cleanups related to mm header file
inclusion.
- The 2 patch series "mm/swapfile.c: select swap devices of default
priority round robin" from Baoquan He improves the selection of swap
devices for NUMA machines.
- The 3 patch series "mm: Convert memory block states (MEM_*) macros to
enums" from Israel Batista changes the memory block labels from macros
to enums so they will appear in kernel debug info.
- The 3 patch series "ksm: perform a range-walk to jump over holes in
break_ksm" from Pedro Demarchi Gomes addresses an inefficiency when KSM
unmerges an address range.
- The 22 patch series "mm/damon/tests: fix memory bugs in kunit tests"
from SeongJae Park fixes leaks and unhandled malloc() failures in DAMON
userspace unit tests.
- The 2 patch series "some cleanups for pageout()" from Baolin Wang
cleans up a couple of minor things in the page scanner's
writeback-for-eviction code.
- The 2 patch series "mm/hugetlb: refactor sysfs/sysctl interfaces" from
Hui Zhu moves hugetlb's sysfs/sysctl handling code into a new file.
- The 9 patch series "introduce VM_MAYBE_GUARD and make it sticky" from
Lorenzo Stoakes makes the VMA guard regions available in /proc/pid/smaps
and improves the mergeability of guarded VMAs.
- The 2 patch series "mm: perform guard region install/remove under VMA
lock" from Lorenzo Stoakes reduces mmap lock contention for callers
performing VMA guard region operations.
- The 2 patch series "vma_start_write_killable" from Matthew Wilcox
starts work in permitting applications to be killed when they are
waiting on a read_lock on the VMA lock.
- The 11 patch series "mm/damon/tests: add more tests for online
parameters commit" from SeongJae Park adds additional userspace testing
of DAMON's "commit" feature.
- The 9 patch series "mm/damon: misc cleanups" from SeongJae Park does
that.
- The 2 patch series "make VM_SOFTDIRTY a sticky VMA flag" from Lorenzo
Stoakes addresses the possible loss of a VMA's VM_SOFTDIRTY flag when
that VMA is merged with another.
- The 16 patch series "mm: support device-private THP" from Balbir Singh
introduces support for Transparent Huge Page (THP) migration in zone
device-private memory.
- The 3 patch series "Optimize folio split in memory failure" from Zi
Yan optimizes folio split operations in the memory failure code.
- The 2 patch series "mm/huge_memory: Define split_type and consolidate
split support checks" from Wei Yang provides some more cleanups in the
folio splitting code.
- The 16 patch series "mm: remove is_swap_[pte, pmd]() + non-swap
entries, introduce leaf entries" from Lorenzo Stoakes cleans up our
handling of pagetable leaf entries by introducing the concept of
'software leaf entries', of type softleaf_t.
- The 4 patch series "reparent the THP split queue" from Muchun Song
reparents the THP split queue to its parent memcg. This is in
preparation for addressing the long-standing "dying memcg" problem,
wherein dead memcg's linger for too long, consuming memory resources.
- The 3 patch series "unify PMD scan results and remove redundant
cleanup" from Wei Yang does a little cleanup in the hugepage collapse
code.
- The 6 patch series "zram: introduce writeback bio batching" from
Sergey Senozhatsky improves zram writeback efficiency by introducing
batched bio writeback support.
- The 4 patch series "memcg: cleanup the memcg stats interfaces" from
Shakeel Butt cleans up our handling of the interrupt safety of some
memcg stats.
- The 4 patch series "make vmalloc gfp flags usage more apparent" from
Vishal Moola cleans up vmalloc's handling of incoming GFP flags.
- The 6 patch series "mm: Add soft-dirty and uffd-wp support for RISC-V"
from Chunyan Zhang teches soft dirty and userfaultfd write protect
tracking to use RISC-V's Svrsw60t59b extension.
- The 5 patch series "mm: swap: small fixes and comment cleanups" from
Youngjun Park fixes a small bug and cleans up some of the swap code.
- The 4 patch series "initial work on making VMA flags a bitmap" from
Lorenzo Stoakes starts work on converting the vma struct's flags to a
bitmap, so we stop running out of them, especially on 32-bit.
- The 2 patch series "mm/swapfile: fix and cleanup swap list iterations"
from Youngjun Park addresses a possible bug in the swap discard code and
cleans things up a little.
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Merge tag 'mm-stable-2025-12-03-21-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"__vmalloc()/kvmalloc() and no-block support" (Uladzislau Rezki)
Rework the vmalloc() code to support non-blocking allocations
(GFP_ATOIC, GFP_NOWAIT)
"ksm: fix exec/fork inheritance" (xu xin)
Fix a rare case where the KSM MMF_VM_MERGE_ANY prctl state is not
inherited across fork/exec
"mm/zswap: misc cleanup of code and documentations" (SeongJae Park)
Some light maintenance work on the zswap code
"mm/page_owner: add debugfs files 'show_handles' and 'show_stacks_handles'" (Mauricio Faria de Oliveira)
Enhance the /sys/kernel/debug/page_owner debug feature by adding
unique identifiers to differentiate the various stack traces so
that userspace monitoring tools can better match stack traces over
time
"mm/page_alloc: pcp->batch cleanups" (Joshua Hahn)
Minor alterations to the page allocator's per-cpu-pages feature
"Improve UFFDIO_MOVE scalability by removing anon_vma lock" (Lokesh Gidra)
Address a scalability issue in userfaultfd's UFFDIO_MOVE operation
"kasan: cleanups for kasan_enabled() checks" (Sabyrzhan Tasbolatov)
"drivers/base/node: fold node register and unregister functions" (Donet Tom)
Clean up the NUMA node handling code a little
"mm: some optimizations for prot numa" (Kefeng Wang)
Cleanups and small optimizations to the NUMA allocation hinting
code
"mm/page_alloc: Batch callers of free_pcppages_bulk" (Joshua Hahn)
Address long lock hold times at boot on large machines. These were
causing (harmless) softlockup warnings
"optimize the logic for handling dirty file folios during reclaim" (Baolin Wang)
Remove some now-unnecessary work from page reclaim
"mm/damon: allow DAMOS auto-tuned for per-memcg per-node memory usage" (SeongJae Park)
Enhance the DAMOS auto-tuning feature
"mm/damon: fixes for address alignment issues in DAMON_LRU_SORT and DAMON_RECLAIM" (Quanmin Yan)
Fix DAMON_LRU_SORT and DAMON_RECLAIM with certain userspace
configuration
"expand mmap_prepare functionality, port more users" (Lorenzo Stoakes)
Enhance the new(ish) file_operations.mmap_prepare() method and port
additional callsites from the old ->mmap() over to ->mmap_prepare()
"Fix stale IOTLB entries for kernel address space" (Lu Baolu)
Fix a bug (and possible security issue on non-x86) in the IOMMU
code. In some situations the IOMMU could be left hanging onto a
stale kernel pagetable entry
"mm/huge_memory: cleanup __split_unmapped_folio()" (Wei Yang)
Clean up and optimize the folio splitting code
"mm, swap: misc cleanup and bugfix" (Kairui Song)
Some cleanups and a minor fix in the swap discard code
"mm/damon: misc documentation fixups" (SeongJae Park)
"mm/damon: support pin-point targets removal" (SeongJae Park)
Permit userspace to remove a specific monitoring target in the
middle of the current targets list
"mm: MISC follow-up patches for linux/pgalloc.h" (Harry Yoo)
A couple of cleanups related to mm header file inclusion
"mm/swapfile.c: select swap devices of default priority round robin" (Baoquan He)
improve the selection of swap devices for NUMA machines
"mm: Convert memory block states (MEM_*) macros to enums" (Israel Batista)
Change the memory block labels from macros to enums so they will
appear in kernel debug info
"ksm: perform a range-walk to jump over holes in break_ksm" (Pedro Demarchi Gomes)
Address an inefficiency when KSM unmerges an address range
"mm/damon/tests: fix memory bugs in kunit tests" (SeongJae Park)
Fix leaks and unhandled malloc() failures in DAMON userspace unit
tests
"some cleanups for pageout()" (Baolin Wang)
Clean up a couple of minor things in the page scanner's
writeback-for-eviction code
"mm/hugetlb: refactor sysfs/sysctl interfaces" (Hui Zhu)
Move hugetlb's sysfs/sysctl handling code into a new file
"introduce VM_MAYBE_GUARD and make it sticky" (Lorenzo Stoakes)
Make the VMA guard regions available in /proc/pid/smaps and
improves the mergeability of guarded VMAs
"mm: perform guard region install/remove under VMA lock" (Lorenzo Stoakes)
Reduce mmap lock contention for callers performing VMA guard region
operations
"vma_start_write_killable" (Matthew Wilcox)
Start work on permitting applications to be killed when they are
waiting on a read_lock on the VMA lock
"mm/damon/tests: add more tests for online parameters commit" (SeongJae Park)
Add additional userspace testing of DAMON's "commit" feature
"mm/damon: misc cleanups" (SeongJae Park)
"make VM_SOFTDIRTY a sticky VMA flag" (Lorenzo Stoakes)
Address the possible loss of a VMA's VM_SOFTDIRTY flag when that
VMA is merged with another
"mm: support device-private THP" (Balbir Singh)
Introduce support for Transparent Huge Page (THP) migration in zone
device-private memory
"Optimize folio split in memory failure" (Zi Yan)
"mm/huge_memory: Define split_type and consolidate split support checks" (Wei Yang)
Some more cleanups in the folio splitting code
"mm: remove is_swap_[pte, pmd]() + non-swap entries, introduce leaf entries" (Lorenzo Stoakes)
Clean up our handling of pagetable leaf entries by introducing the
concept of 'software leaf entries', of type softleaf_t
"reparent the THP split queue" (Muchun Song)
Reparent the THP split queue to its parent memcg. This is in
preparation for addressing the long-standing "dying memcg" problem,
wherein dead memcg's linger for too long, consuming memory
resources
"unify PMD scan results and remove redundant cleanup" (Wei Yang)
A little cleanup in the hugepage collapse code
"zram: introduce writeback bio batching" (Sergey Senozhatsky)
Improve zram writeback efficiency by introducing batched bio
writeback support
"memcg: cleanup the memcg stats interfaces" (Shakeel Butt)
Clean up our handling of the interrupt safety of some memcg stats
"make vmalloc gfp flags usage more apparent" (Vishal Moola)
Clean up vmalloc's handling of incoming GFP flags
"mm: Add soft-dirty and uffd-wp support for RISC-V" (Chunyan Zhang)
Teach soft dirty and userfaultfd write protect tracking to use
RISC-V's Svrsw60t59b extension
"mm: swap: small fixes and comment cleanups" (Youngjun Park)
Fix a small bug and clean up some of the swap code
"initial work on making VMA flags a bitmap" (Lorenzo Stoakes)
Start work on converting the vma struct's flags to a bitmap, so we
stop running out of them, especially on 32-bit
"mm/swapfile: fix and cleanup swap list iterations" (Youngjun Park)
Address a possible bug in the swap discard code and clean things
up a little
[ This merge also reverts commit
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Maurice Hieronymus
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c5108c58b9 |
tracing: Fix typo in trace_seq.c
Fix typo "wont" to "won't". Link: https://patch.msgid.link/20251121221835.28032-15-mhi@mailbox.org Signed-off-by: Maurice Hieronymus <mhi@mailbox.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |